(19)

(11)

EP 3 894 471 A1

(12)

(43) Date of publication: 20.10.2021 Bulletin 2021/42 (21) Application number: 19835487.0 (22) Date of filing: 10.12.2019

(51) International Patent Classification (IPC):  C08L 7/00(2006.01) C08K 3/04(2006.01) C08K 3/00(2018.01) B60C 1/00(2006.01) (52) Cooperative Patent Classification (CPC): B60C 1/0025; B60C 2001/005; B60C 2001/0058; C08K 3/041; C08K 3/042; B60C 2001/0033; C08K 3/04; C08L 7/00; B60C 1/0016; C08K 5/0025; B60C 1/00; C08K 5/13   C-Sets: C08K 5/0025, C08L 7/00; C08L 7/00, C08L 61/06, C08K 3/04, C08K 5/09, C08K 3/22, C08K 5/18, C08K 3/06, C08K 5/47, C08K 5/44, C08K 5/34922; C08K 3/04, C08L 7/00; C08K 5/13, C08L 7/00; (86) International application number: PCT/IB2019/060596 (87) International publication number: WO 2020/121180 (18.06.2020 Gazette 2020/25)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 11.12.2018 IT 201800010983 (71) Applicant: Pirelli Tyre S.p.A. 20126 Milano (IT)	(72) Inventors: GIANNINI, Luca 20126 Milano (IT) TADIELLO, Luciano 20126 Milano (IT) ACOCELLA, Maria Rosaria 84084 Fisciano (SA) (IT) MAGGIO, Mario 84084 Fisciano (SA) (IT) GUERRA, Gaetano 84084 Fisciano (SA) (IT) VITTORE, Aniello 84084 Fisciano (SA) (IT) (74) Representative: PGA S.p.A.  Via Mascheroni, 31 20145 Milano 20145 Milano (IT)